Annals of the South African Museum, Volume 7 |
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Page 100
In the largest individuals , characters senility are seen in the imperfect rib -
formation near the lower margin , and the replacement of sculpture by simple
ridges and lines of accretion at the frontal margin , where the ribs may then be
seen to ...
In the largest individuals , characters senility are seen in the imperfect rib -
formation near the lower margin , and the replacement of sculpture by simple
ridges and lines of accretion at the frontal margin , where the ribs may then be
seen to ...
Page 115
to the frontal margin . It seems doubtful from Eichwald's figures whether a single
form alone is represented , for it is difficult to believe that the originals of pl . xiii . ,
fig . 12 , pl . xiv . , fig . 1 , and pl . xiv . , fig . 3 can belong to one species .
to the frontal margin . It seems doubtful from Eichwald's figures whether a single
form alone is represented , for it is difficult to believe that the originals of pl . xiii . ,
fig . 12 , pl . xiv . , fig . 1 , and pl . xiv . , fig . 3 can belong to one species .
Page 137
ridges are absent in the adult , and the interior of the valve - margin is strongly
crenulated . Astarte rhodani Pict . and Camp . , * from the “ Gault ” of the Pertedu -
Rhône , is of similar general type , but is truncated posteriorly . Shells from the ...
ridges are absent in the adult , and the interior of the valve - margin is strongly
crenulated . Astarte rhodani Pict . and Camp . , * from the “ Gault ” of the Pertedu -
Rhône , is of similar general type , but is truncated posteriorly . Shells from the ...
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Contents
ExogyRA | 25 |
extoni Cleithrolepis S Woodward 264 | 31 |
baini Mytilus Sharpe | 33 |
8 other sections not shown
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Common terms and phrases
adult African angle anterior apertures appears atherstoni baini Band becomes beds bone border Broom characters closely collection comparable comparison considerably convex Cretaceous curved d'Orbigny described developed diameter differs direction distinct distinguished dorsal doubt elongated evidence fauna figure flank fossils front frontal further genus Geol greater greatest half height Holcostephanus individual Jurassic known lateral length less lower margin marked measures middle Museum narrow Neocomian obtained occur Oomia ornamentation outline passes Plate portion posterior present preserved probably prominent referred regarded region relatively remarks represented resemblance ribs ridges Rogers rounded sculpture seems seen separated Sharpe shell shown shows side similar single slightly South African species specimen stage Sunday's River surface Tate traced Trigonia tubercles Uitenhage umbilical umbo umbonal upper valve whorl
Bibliographic information
| Title | Annals of the South African Museum, Volume 7 Annals of the South African Museum, South African Museum |
| Author | South African Museum |
| Publisher | South African Museum, 1913 |
| Original from | University of Minnesota |
| Digitized | 4 Oct 2013 |
| Export Citation | BiBTeX EndNote RefMan |